Errors on Claude Sonnet 4.5 were resolved, but concerns lingered.
Elevated errors on Claude Sonnet 4.5
Original: Elevated errors on Claude Sonnet 4.5
Importance: エラーが発生し、ユーザーへの影響が懸念されたため。
Summary
On April 28, 2026, errors occurred on Claude Sonnet 4.5, lasting from 6:22 to 6:39 PT. The issue has now been resolved. Investigations into the cause were ongoing, raising concerns about user impact.
Key Points
- Errors occurred on Claude Sonnet 4.5
- The incident lasted from 6:22 to 6:39 PT
- The issue is now resolved
- The cause is still being investigated
- User impact was a concern
View developer notes (APIs, breaking changes, migration)
An elevated error rate occurred on Claude Sonnet 4.5, from 6:22 to 6:39 PT. The issue is now resolved, but investigations into the errors are ongoing, with user impact being a concern.
Source: https://status.claude.com/incidents/x1y91zcb2rp2
Outlet: Anthropic Status
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